Anatomy and Physiology

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  1. Which parts of atoms can interact (react) to form chemical bonds?
    valence electrons
  2. Atoms of oxygen have a total of 8 electrons. Are these atoms stable, and why or why not?
    No, because the atoms have only 6 valence electrons, but need 8 for stability.
  3. Carbon atoms have four valence electrons. Are they likely to react with other atoms, and why or why not?
    Yes, because they can become more stable by doing so.
  4. Which of the following is not produced through chemical bonding?
    atoms
  5. Which bonds often bind different parts of a molecule into a specific three-dimensional shape?
    Hydrogen
  6. Which of the following best defines covalent bonds?
    the bond formed when shared electrons occupy a single orbital common to both atoms within a molecule
  7. The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
    2, 8, 1
  8. What level of protein synthesis is represented by the coiling of the protein chain backbone into an alpha helix?
    secondary structure
  9. Except for elements 1 and 2, all other elements are stable with how many electrons in their outermost (valence) energy level?
    8
  10. Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?
    Cholesterol is produced naturally by the liver, in addition to being ingested in foods.
  11. Nonpolar molecules are the result of unequal electron pair sharing.
    FalsePolar molecules are the result of unequal electron pair sharing. Nonpolar molecules are electrically balanced due to the equal sharing of electrons between the atoms of the molecules.
  12. Atom X has 17 protons. How many electrons are in its valence shell?
    7
  13. You notice that you cannot read your book through a test tube of fluid held against the print, making it so blurred as to be unreadable. There is no precipitant in the bottom of the beaker, though it has been sitting for several days in a rack. What type of liquid is this?
    colloid
  14. The genetic information is coded in DNA by the ________.
    sequence of the nucleotides
  15. Which of the following is not true of proteins?
    They appear to be the molecular carriers of coded hereditary information.
  16. Salts are always ________.
    ionic compounds
  17. Which of the following is formed once the ions in the salt crystal have completely dissociated from one another?
    a solution
  18. Formation of hydrogen bonds requires hydrogen atoms and what else?
    polar covalent bonds
  19. Which of the following correctly ranks the types of chemical bonds, in order, from strongest to weakest?
    covalent, ionic, hydrogen
  20. Which of the following distinguishes hydrogen bonds from covalent bonds?
    Only hydrogen bonds can form between molecules.
  21. Which of the following is not a result of hydrogen bonds?
    Two hydrogen atoms join together to form a molecule of hydrogen gas.
  22. Suspensions may also be called emulsions.
    False Colloids, not suspensions may also be called emulsions.
  23. Which of the following is an example of a decomposition reaction?
    MgO2 → Mg + O2

    A decomposition reaction occurs when a larger molecule is broken down into smaller molecules or its constituent atoms.
  24. cation
    electrically charged particle due to loss of an electron
  25. neutron
    neutral subatomic particle
  26. atom
    smallest particle of an element that retains its properties
  27. molecule
    smallest particle of an element that retains its properties
  28. molecule
    smallest particle of a compound that still retains its properties
  29. Which type(s) of subatomic particles can be located within the nucleus of an atom?
    protons and neutrons
  30. Which subatomic particles contribute to an atom's mass number but not its atomic number?
    neutrons
  31. An atom of oxygen has an atomic number of 8 and a mass number of 18. How many of each type of subatomic particle does it contain?
    8 protons, 8 electrons, and 10 neutrons
  32. The chemical symbol O=O means ________.
    the atoms are double bonded
  33. Choose the answer that best describes fibrous proteins.
    are very stable and insoluble in water
  34. Which of the following is NOT one of the three major types of chemical reactions?
    • hyperbolic 
    • Most chemical reactions exhibit one of three recognizable patterns. They are either synthesis, decomposition, or exchange reactions.
  35. Which of the following statements is false?
    When the hydrogen ion concentration decreases, the hydroxyl ion concentration also decreases.
  36. Which of the following does NOT describe enzymes?
    Enzymes work by raising the energy of activation.
  37. Which of the following does describe enzymes?
    • Some enzymes are protein plus a cofactor.
    • Each enzyme is chemically specific.Some enzymes are purely protein.
  38. The four elements that make up about 96% of body matter are ________.
    carbon, oxygen, hydrogen, nitrogen
  39. The superscript preceding each hydrogen atomic symbol (H) represents which of the following?1H
    the atomic mass of the corresponding atom
  40. compound
    water
  41. element
    carbon
  42. compound 1
    dry ice (frozen carbon dioxide)
  43. mixture
    blood
  44. The basic structural material of the body consists of ________.
    Proteins
  45. A chemical reaction in which bonds are broken is usually associated with ________.
    the release of energy
  46. How many hydrogen atoms will nitrogen bond with to form a stable molecule?
    • 3
    • Nitrogen has 5 electrons in its valence (outermost) electron shell. Therefore, it will form covalent bonds with three hydrogen atoms. Each single covalent bond includes the sharing of three pairs of electrons. The three electrons contributed by the hydrogen atoms will fill the valence shell of nitrogen.
  47. Which of the following is NOT a difference between a compound and a mixture?
    Mixtures are homogeneous while compounds are heterogeneous.
  48. Mixtures differ from compounds in several important ways.
    The chief difference between mixtures and compounds is that no chemical bonding occurs between the components of a mixture. The properties of atoms and molecules are not changed when they become part of a mixture. (2) Depending on the mixture, its components can be separated by physical means, straining, filtering, evaporation, and so on. Compounds, by contrast, can be separated into their constituent atoms only by chemical means (breaking bonds). (3) Some mixtures are homogenous, while others are heterogeneous. All compounds are homogeneous.
  49. Select the correct statement about isotopes.
    Isotopes of the same element have the same atomic number but differ in their atomic masses.
  50. Which of the following is TRUE regarding the pH of a solution?
    The more hydrogen ions in a solution, the more acidic the solution is.
  51. energy
    can be measured only by its effects on matter
  52. matter
    anything that occupies space and has mass
  53. although a man who weighs 175 pounds on Earth would be lighter on the moon and heavier on Jupiter, his ___ would not be different
    mass
  54. weight
    is a function of, and varies with, gravity
  55. The single most abundant protein in the body is ________.
    collagen
  56. Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?
    Salt and water are formed when a strong acid and base are mixed.
  57. Which of the following does not describe uses for the ATP molecule?
    pigment structure
  58. Which of the following does describe uses for the ATP molecule?
    chemical work mechanical work transport across membranes
  59. If an oxygen atom were to form a chemical bond in which it gained two electrons, it would ______.
    become more stable
  60. Carbohydrates are stored in the liver and muscles in the form of ________.
    glycogen
  61. What does the formula C6H12O6 mean?
    There are 12 hydrogen, 6 carbon, and 6 oxygen atoms.
  62. colloids
    heterogeneous, will not settle
  63. suspensions
    heterogeneous, will settle
  64. solutions
    homogeneous, will not settle or scatter light
  65. Which of the following is an example of a suspension?
    blood
  66. In a covalent bond,
    Atoms share one or more pairs of electrons.
  67. Covalent bonds:
    involve the sharing of one to three pairs of electrons.
  68. Which of the following is true of polar covalent bonds?
    The electrons are shared unequally.
  69. A molecule of water (H2O) is formed by what type of bond?
    polar covalent bonds
  70. Which of the following is not considered a factor in influencing a reaction?
    time
  71. Which of the following is considered a factor in influencing a reaction?
    concentration temperature particle size
  72. Which property of water is demonstrated when we sweat?
    high heat of vaporization
  73. mechanical energy
    legs moving the pedals of a bicycle
  74. chemical energy
    when the bonds of ATP are broken, energy is released to do cellular work
  75. radiant energy
    energy that travels in waves. part of the electromagnetic spectrum
  76. electrical energy
    represented by the flow of charged particles along a conductor, or the flow of ions across a membrane
  77. What explains the negative charge on the oxygen atom within the water molecule?
    Oxygen atoms have a stronger pull on the electrons shared within a covalent bond formed between oxygen and hydrogen.
  78. Sucrose is a ________.
    disaccharide
  79. Kidneys play a major role in helping to maintain proper levels of Na+ and K+ ions in the blood. If the kidneys fail to function properly, one of the direct consequences would be_________.
    impaired nerve impulse transmission
  80. The major function of RNA is to carry out the genetic instructions for protein synthesis.
    True
  81. ATP is an unstable, high-energy molecule that provides body cells with a form of energy that is immediately usable.
    True
  82. Which of the following best describes an isotope?
    structurally variant atoms, which have the same number of protons and electrons, but differ in the number of neutrons they contain
  83. Which of the following would be regarded as an organic molecule?
    • CH4
    • Carbon is in it
  84. What is a dipole?
    a polar molecule
  85. What is the primary energy-transferring molecule in cells?
    ATP
  86. Which of the following is NOT a compound?
    oxygen gas
  87. The lines drawn between hydrogen (H) atoms and the oxygen (O) atom in the structural diagram presented in the right of the figure each represent a ______.
    • polar covalent bond
    • A covalent bond in which electrons are shared unequally is termed a polar covalent bond.
  88. Choose the correctly matched pair.
    DNA and RNA are nucleic acids; they are built from nucleotides.
  89. Water ________.
    can form hydrogen bonds
  90. Which of the following is TRUE of atomic weight?
    Atomic weight of an element is approximately equal to the mass number of its most abundant isotope.
  91. What is the classification of a solution with a pH of 8.3?
    alkaline solution
  92. In general, the lipids that we refer to as oils have ________.
    a high degree of unsaturated bonds
  93. Which of the following elements is necessary for proper conduction of nervous impulses?
    Na
  94. polar covalent bond
    a bond in which electrons are shared unequally
  95. ionic bond
    a bond in which electrons are completely lost or gained by the atoms involved
  96. nonpolar covalent bond
    a bond in which electrons are shared equally
  97. hydrogen bond
    a type of bond important in tying differen parts of the same molecule together into a three-dimensional structure
  98. Which of the following is the major positive ion outside cells?
    sodium
  99. What type of chemical bond joins sodium (element 11) and chlorine (element 17)?
    • ionic
    • Sodium gives up its valence shell electron (becoming a cation) to drop back to a stable energy level, and chlorine gains one electron (becoming an anion) to fill its valence shell and become stable.
  100. What is the most abundant and important inorganic compound in living material?
    water
  101. Choose the answer that best describes HCO3-.
    a bicarbonate ion
  102. What is the difference between kinetic and potential energy?
    Kinetic energy is energy in action, while potential energy is stored energy.
  103. An element has an atomic number of 17 and a mass of 35. How many protons, neutrons, and electrons does the element have?
    • 17 protons, 18 neutrons, and 17 electrons
    • The mass number is the sum of protons and neutrons in the atom. The atomic number is the number of protons in the atom. The number of protons equals the number of electrons in a chemically inactive atom
  104. Each specific amino acid has a unique ______.
    R group
  105. What is a chain of more than 50 amino acids called?
    protein
  106. What is the most significant factor in the formation of a covalent bond?
    the sharing of electron pairs between two atoms
  107. A 23-year-old male was riding his road bike in 100-degree heat, when he suddenly became nauseated and weak. He called 911 from his cell phone. When the ambulance came, the paramedics started intravenous therapy for severe dehydration. Which physical property and which physiological role of water caused the dehydration, and why?
    High heat of vaporization; water was lost when evaporating from the skin to cool the body.
  108. A 65-year-old patient came to the emergency room with complaints of severe heartburn unrelieved by taking a "large handful" of antacids. Would you expect the pH to be relatively high, low, or normal for the patient's stomach contents, and why?
    The pH would be high. Antacids are basic, and too many antacids would result in a relatively alkaline state.
  109. Amino acids joining together to make a peptide is a good example of a(n) ________ reaction.
    synthesis
  110. Carbohydrates and proteins are built up from their basic building blocks by the ________.
    removal of a water molecule between each two units
  111. Which of the following is NOT one of the three basic steps involved in enzyme activity?
    The substrate absorbs chemical energy from the enzyme after binding to its active site.
  112. Which protein types are vitally important to cell function in all types of stressful circumstances?
    molecular chaperones
  113. The atomic weight is only an average of relative weights of an atom and its isotopes, and it may vary from the weight of a specific isotope.
    True
  114. Emulsions and colloids are the same thing.
    True
  115. Chemical properties are determined primarily by neutrons.
    False
  116. A charged particle is generally called an ion.
    TRUE
  117. Isotopes differ from each other only in the number of electrons contained.
    False
  118. About 60% to 80% of the volume of most living cells consists of organic compounds.
    False
  119. Lipids are a poor source of stored energy.
    False
  120. Current information theorizes that omega-3 fatty acids decrease the risk of heart disease.
    True
  121. Glucose is an example of a monosaccharide.
    True
  122. A molecule consisting of one carbon atom and two oxygen atoms is correctly written as CO2.
    True
  123. The lower the pH, the higher the hydrogen ion concentration.
    True
  124. Covalent bonds are generally less stable than ionic bonds.
    False
  125. Hydrogen bonds are comparatively strong bonds.
    False
  126. The fact that no chemical bonding occurs between the components of a mixture is the chief difference between mixtures and compounds
    True
  127. Alpha particles, although relatively weak energy particles, are second only to smoking as a cause of lung cancer.
    True
  128. No chemical bonding occurs between the components of a mixture.
    True
  129. All organic compounds contain carbon.
    True
  130. A dipeptide can be broken into two amino acids by dehydration synthesis.
    False
  131. The pH of body fluids must remain fairly constant for the body to maintain homeostasis.
    True
  132. Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.
    True
  133. Buffers resist abrupt and large changes in the pH of the body by releasing or binding ions.
    True
  134. Which of the following elements is necessary for proper conduction of nervous impulses?
    A) Fe
    B) P
    C) Na
    D) I
    C) Na
    (this multiple choice question has been scrambled)
  135. Choose the statement that is false or incorrect.
    A) In chemical reactions, breaking old bonds requires energy and forming new bonds releases energy.
    B) Exergonic reactions release more energy than they absorb.
    C) Endergonic reactions absorb more energy than they release.
    D) A key feature of the body's metabolism is the almost exclusive use of exergonic reactions by the body.
    D) A key feature of the body's metabolism is the almost exclusive use of exergonic reactions by the body.
    (this multiple choice question has been scrambled)
  136. In general, the lipids that we refer to as oils have ________.
    A) a high degree of unsaturated bonds
    B) a high degree of saturated bonds
    C) a high water content
    D) long fatty acid chains
    A) a high degree of unsaturated bonds
    (this multiple choice question has been scrambled)
  137. The genetic information is coded in DNA by the ________.
    A) regular alteration of sugar and phosphate molecules
    B) sequence of the nucleotides
    C) three-dimensional structure of the double helix
    D) arrangement of the histones
    B) sequence of the nucleotides
    (this multiple choice question has been scrambled)
  138. Which of the following is not true of proteins?
    A) They appear to be the molecular carriers of the coded hereditary information.
    B) They may be denatured or coagulated by heat or acidity.
    C) Some types are called enzymes.
    D) Their function depends on the three-dimensional shape.
    A) They appear to be the molecular carriers of the coded hereditary information.
    (this multiple choice question has been scrambled)
  139. The single most abundant protein in the body is ________.
    A) hemoglobin
    B) glucose
    C) DNA
    D) collagen
    D) collagen
    (this multiple choice question has been scrambled)
  140. Carbohydrates are stored in the liver and muscles in the form of ________.
    A) glycogen
    B) glucose
    C) triglycerides
    D) cholesterol
    A) glycogen
    (this multiple choice question has been scrambled)
  141. Which of the following describes coenzymes?
    A) enzymes that work together
    B) metal ions
    C) organic molecules derived from vitamins
    D) two enzymes that perform the same function
    C) organic molecules derived from vitamins
    (this multiple choice question has been scrambled)
  142. Which of the following is not a role of molecular chaperonins?
    A) aid the desired folding and association process of polypeptides
    B) prevent accidental, premature, or incorrect folding of polypeptide chains
    C) act as a biological catalyst
    D) help to translocate proteins and certain metal ions across cell membranes
    E) promote the breakdown of damaged or denatured proteins
    C) act as a biological catalyst
    (this multiple choice question has been scrambled)
  143. A chemical reaction in which bonds are broken is usually associated with ________.
    A) the release of energy
    B) a synthesis
    C) forming a larger molecule
    D) the consumption of energy
    A) the release of energy
    (this multiple choice question has been scrambled)
  144. Salts are always ________.
    A) single covalent compounds
    B) hydrogen bonded
    C) ionic compounds
    D) double covalent compounds
    C) ionic compounds
    (this multiple choice question has been scrambled)
  145. The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
    A) 2
    B) 2, 8, 1
    C) 2, 8, 8
    D) 2, 8
    B) 2, 8, 1
    (this multiple choice question has been scrambled)
  146. A solution that has a pH of 2 could best be described as being ________.
    A) slightly acidic
    B) acidic
    C) basic
    D) neutral
    B) acidic
    (this multiple choice question has been scrambled)
  147. Which of the following is the major positive ion outside cells?
    A) potassium
    B) sodium
    C) nitrogen
    D) hydrogen
    B) sodium
    (this multiple choice question has been scrambled)
  148. Which of the following would be regarded as an organic molecule?
    A) H2O
    B) CH4
    C) NaOH
    D) NaCl
    B) CH4
    (this multiple choice question has been scrambled)
  149. What is a chain of 25 amino acids called?
    A) nucleotide
    B) polypeptide
    C) protein
    D) starch
    B) polypeptide
    (this multiple choice question has been scrambled)
  150. Which of the following constitutes a long chain of simple sugars?
    A) polysaccharide
    B) monosaccharide
    C) nucleic acid
    D) protein
    A) polysaccharide
    (this multiple choice question has been scrambled)
  151. What level of protein synthesis is represented by the coiling of the protein chain backbone into an alpha helix?
    A) quaternary structure
    B) secondary structure
    C) tertiary structure 
    D) primary structure
    B) secondary structure
    (this multiple choice question has been scrambled)
  152. Carbohydrates and proteins are built up from their basic building blocks by the ________.
    A) addition of a water molecule between each two units
    B) addition of a carbon atom between each two units
    C) removal of a nitrogen atom between each two units
    D) removal of a water molecule between each two units
    D) removal of a water molecule between each two units
    (this multiple choice question has been scrambled)
  153. Which statement about enzymes is false?A) Enzym
    es raise the activation energy needed to start a reaction.
    B) Enzymes are composed mostly of protein.
    C) Enzymes are organic catalysts.
    D) Enzymes may be damaged by high temperature.
    A) Enzymes raise the activation energy needed to start a reaction.
  154. Which of the following statements is false?
    A) Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.
    B) Chemical reactions proceed more quickly at higher temperatures.
    C) Catalysts increase the rate of chemical reactions.
    D) Chemical reactions progress at a faster rate when the reacting particles are present in higher numbers.
    A) Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.
    (this multiple choice question has been scrambled)
  155. Which of the following is true regarding the concentration of solutions?
    A) Percent solutions are parts per 1000 parts.
    B) Molarity is one mole of solute per 1000 ml of solution.
    C) To calculate molarity, one must know the atomic number of the solute.
    D) To calculate molarity, one must know the atomic weight of the solvent.
    B) Molarity is one mole of solute per 1000 ml of solution.
    (this multiple choice question has been scrambled)
  156. Select the statement about mixtures that is correct.
    A) Solutions contain particles that settle out in time.
    B) A solution contains solvent in large amounts and solute in smaller quantities.
    C) Suspensions are homogeneous mixtures of two or more components.
    D) Suspensions can change reversibly from liquid to solid.
    B) A solution contains solvent in large amounts and solute in smaller quantities.
    (this multiple choice question has been scrambled)
  157. Choose the answer that best
    describes HCO3-.
    A) a bicarbonate ion
    B) a weak acid
    C) a proton donor
    D) common in the liver
    A) a bicarbonate ion
    (this multiple choice question has been scrambled)
  158. Select which reactions will usually be irreversible regarding chemical equilibrium in living systems.
    A) ADP + Pi to make ATP
    B) glucose molecules joined to make glycogen
    C) glucose to CO2 and H2O
    D) H2O + CO2 to make H2CO3
    C) glucose to CO2 and H2O
    (this multiple choice question has been scrambled)
  159. What happens in redox reactions?
    A) both decomposition and electron exchange occur
    B) the electron acceptor is oxidized
    C) the electron donor is reduced
    D) the reaction is always easily reversible
    A) both decomposition and electron exchange occur
    (this multiple choice question has been scrambled)
  160. Choose the answer that best describes fibrous proteins.
    A) are very stable and insoluble in water
    B) rarely exhibit secondary structure
    C) are usually called enzymes
    D) are cellular catalysts
    A) are very stable and insoluble in water
    (this multiple choice question has been scrambled)
  161. Which of the following does not describe the ATP molecule?
    A) transport
    B) pigments
    C) mechanical work
    D) chemical work
    B) pigments
    (this multiple choice question has been scrambled)
  162. Select the most correct statement regarding nucleic acids.
    A) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
    B) TDNA is considered a molecular slave of DNA.
    C) RNA is a long, single-stranded molecule made up of the bases A, T, G, and C.
    D) Three forms exist: DNA, RNA, and tDNA.
    A) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
    (this multiple choice question has been scrambled)
  163. Which of the following is an example of a suspension?
    A) salt water
    B) rubbing alcohol
    C) cytoplasm
    D) blood
    D) blood
    (this multiple choice question has been scrambled)
  164. Select the correct statement about isotopes.
    A) All the isotopes of an element are radioactive.
    B) Isotopes occur only in the heavier elements.
    C) All the isotopes of an element have the same number of neutrons.
    D) Isotopes of the same element have the same atomic number but differ in their atomic masses.
    D) Isotopes of the same element have the same atomic number but differ in their atomic masses.
    (this multiple choice question has been scrambled)
  165. The four elements that make up about 96% of body matter are ________.
    A) nitrogen, hydrogen, calcium, sodium
    B) sodium, potassium, hydrogen, oxygen
    C) carbon, oxygen, hydrogen, nitrogen
    D) carbon, oxygen, phosphorus, calcium
    C) carbon, oxygen, hydrogen, nitrogen
    (this multiple choice question has been scrambled)
  166. An example of a coenzyme is ________.
    A) copper
    B) zinc
    C) riboflavin (vitamin B2)
    D) iron
    C) riboflavin (vitamin B2)
    (this multiple choice question has been scrambled)
  167. ________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function.
    A) Cortisol
    B) Vitamin A
    C) Vitamin K
    D) Vitamin D
    D) Vitamin D
    (this multiple choice question has been scrambled)
  168. In liquid XYZ, you notice that light is scattered as it passes through. There is no precipitant in the bottom of the beaker, though it has been sitting for several days. What type of liquid is this?
    A) solution
    B) mixture
    C) suspension
    D) colloid
    D) colloid
    (this multiple choice question has been scrambled)
  169. Atom X has 17 protons. How many electrons are in its valence shell?
    A) 10
    B) 3
    C) 7
    D) 5
    C) 7
    (this multiple choice question has been scrambled)
  170. Which protein types are vitally important to cell function in all types of stressful circumstances?
    A) structural proteins
    B) regulatory proteins
    C) catalytic proteins
    D) molecular chaperones
    D) molecular chaperones
    (this multiple choice question has been scrambled)
  171. If atom X has an atomic number of 74 it would have which of the following?
    A) 74 protons
    B) 37 protons and 37 electrons
    C) 37 electrons
    D) 37 protons and 37 neutrons
    B) 37 protons and 37 electrons
    (this multiple choice question has been scrambled)
  172. What does the formula C6H12O6 mean?
    A) There are 6 calcium, 12 hydrogen, and 6 oxygen atoms.
    B) There are 12 hydrogen, 6 carbon, and 6 oxygen atoms.
    C) The substance is a colloid
    D) The molecular weight is 24.
    B) There are 12 hydrogen, 6 carbon, and 6 oxygen atoms.
    (this multiple choice question has been scrambled)
  173. Two good examples of a colloid would be Jell-O® and ________.
    A) urine
    B) cytosol
    C) blood
    D) toenails
    B) cytosol
    (this multiple choice question has been scrambled)
  174. An atom with a valence of 3 may have a total of ________ electrons.
    A) 8
    B) 17
    C) 13
    D) 3
    C) 13
    (this multiple choice question has been scrambled)
  175. Which of the following is a neutralization reaction?
    A) NH3 + H+ → NH4+2
    B) HCl + NaOH → NaCl + H2O
    C) HCl → H+ + Cl-
    D) NaOH → Na+ + OH-
    B) HCl + NaOH → NaCl + H2O
    (this multiple choice question has been scrambled)
  176. The chemical symbol OO means ________.
    A) zero equals zero
    B) this is an ionic bond with two shared electrons
    C) the atoms are double bonded
    D) both atoms are bonded and have zero electrons in the outer orbit
    C) the atoms are double bonded
    (this multiple choice question has been scrambled)
  177. What is a dipole?
    A) a type of reaction
    B) a polar molecule
    C) a type of bond
    D) an organic molecule
    B) a polar molecule
    (this multiple choice question has been scrambled)
  178. What does CH4 mean?
    A) There is one carbon and four hydrogen atoms.
    B) This is an inorganic molecule.
    C) This was involved in a redox reaction.
    D) There are four carbon and four hydrogen atoms.
    A) There is one carbon and four hydrogen atoms.
    (this multiple choice question has been scrambled)
  179. Amino acids joining together to make a peptide is a good example of a(n) ________ reaction. 
    A) exchange 
    B) reversible
    C) synthesis 
    D) decomposition 
    C) synthesis
    (this multiple choice question has been scrambled)
  180. Which of the following is not considered a factor in influencing a reaction?
    A) concentration
    B) temperature
    C) particle size
    D) time
    D) time
    (this multiple choice question has been scrambled)
  181. Which of the following is not an electrolyte?
    A) H2O
    B) HCl
    C) Ca2CO3
    D) NaOH
    A) H2O
    (this multiple choice question has been scrambled)
  182. Which property of water is demonstrated when we sweat?
    A) high heat of vaporization
    B) high heat capacity
    C) polar solvent properties
    D) reactivity
    E) cushioning
    A) high heat of vaporization
    (this multiple choice question has been scrambled)
  183. Sucrose is a ________.
    A) disaccharide
    B) polysaccharide
    C) triglyceride
    D) monosaccharide
    A) disaccharide
    (this multiple choice question has been scrambled)
  184. What is the ratio of fatty acids to glycerol in neutral fats?
    A) 1:1
    B) 3:1
    C) 4:1
    D) 2:1
    B) 3:1
    (this multiple choice question has been scrambled)
  185. In a DNA molecule, the phosphate serves ________.
    A) to hold the molecular backbone together
    B) as a code
    C) as nucleotides
    D) to bind the sugars to their bases
    A) to hold the molecular backbone together
    (this multiple choice question has been scrambled)
  186. Heat shock proteins (hsp) are a type of protein called ________.
    A) coenzymes
    B) cofactors
    C) eicosanoids
    D) chaperonins
    D) chaperonins
    (this multiple choice question has been scrambled)
  187. Which bonds often bind different parts of a molecule into a specific three-dimensional shape?
    A) Carbon
    B) Hydrogen
    C) Oxygen
    D) Amino acid
    B) Hydrogen
    (this multiple choice question has been scrambled)
  188. The atomic number is equal to the number of ________.
    protons (and electrons)
  189. Molecules such as methane that are made of atoms that share electrons have ________ bonds
    covalent
  190. An atom with three electrons would have a valence of ________.
    one
  191. AB → A + B is an example of a(n) ________ reaction.
    decomposition
  192. ________ have a bitter taste, feel slippery, and are proton acceptors.
    Bases
  193. A holoenzyme is composed of an apoenzyme and a(n) ________.
    cofactor
  194. In a DNA molecule, guanine would connect to ________.
    cytosine
  195. The ________ molecule directly provides energy for cellular work.
    ATP
  196. Hydrogen bonds are more like a type of weak ________ than true bonds.
    attraction
  197. Weak acids and bases make good ________.
    buffers
  198. Starch is the stored carbohydrate in plants, while ________ is the stored carbohydrate in animals.
    glycogen
  199. How many phosphates would AMP have attached to it?
    one
  200. Which metals have a toxic effect on the body?
    heavy

Card Set Information

Author:
Almah
ID:
317504
Filename:
Anatomy and Physiology
Updated:
2016-03-17 23:40:40
Tags:
chemistry
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Description:
chemistry
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